Silicon Coated Road Marking Glass Bead

Product Description

Silicon coated road marking glass bead

Product Description

Glass beads are tiny spheres of glass that are used in paint and durable road markings to reflect light back to the driver in dark or poor weather conditions - improving safety and visibility. The glass beads play a very important role in the road safety .During day time the white road marking material gives the sufficient visibility as a contrast to the asphalt. In the night time contrast of the white line is not sufficient and must be improved by adding light reflective glass beads.

Physical Properties
 

Name	Index
Appearance	round, clean, transparent and free of bubbles and foreign matters
Specific gravity	2.4-2.6g/cm3
Roundness	≤600μm  roundness≥85%, ≥600μm  roundness ≥80%
PH	7.2
Index of refraction	≥1.5
SiO2	≥65%
Micro hardness	630kg/mm2

Typical Chemical Composition
 

SiO2	Na2O	MgO	CaO	Al2O3	K2O	others
71-73%	13-15 %	3-5%	8-10%	0.5-2%	0.2-0.6%	≤2%

Dimension
1). Premixed Type
 

Size scope (μm)	Alternative NO.(mesh)	content(%)
>600	>30	0
600-300	30-50	50-90
300-150	50-100	5-50
<150	<100	0-5

2).Surface Scattered Type
 

Size scope (μm)	Alternative NO.(mesh)	Content (%)
>850	>20	0
850-600	20-30	5-25
600-300	30-50	30-80
300-106	50-140	10-40
<106	<140	0-5

Product standards 
1).BS6088A/B International Standard

 

Type	Glass bead size scope(μm)	Glass bead quality percentage(%)
BS6088A	>1180	0-3
	1180-850	5-20
	850-425	65-95
	<425	0-10
BS6088B	>850	0-5
	850-600	5-20
	600-300	30-75
	300-180	10-30
	<180	0-15

 
2).KSL2521 International Standard
 

Type	glass bead size scope(μm)	Glass bead quality percentage(%)
1	>850	0
	850-600	50-30
	600-300	30-80
	300-106	10-40
	<106	0-5
2	>600	0
	600-300	40-90
	300-150	5-60
	<150	0-5

3).AASHTO M247 International Standard
 

Type	glass bead size scope(μm)	Glass bead quality percentage(%)
1	>850	0
	850-600	5-25
	600-300	40-80
	300-150	10-35
	<150	0-5
2	>600	0
	600-425	0-5
	425-300	20-50
	300-180	45-75
	<180	0-5

4). EN1423, EN1424 International Standard
 

Type	glass bead size scope(μm)	Glass bead quality percentage(%)
EN1424	1180	0
	1000	0-10
	850	5-20
	600	45-85
	355	95-100
EN1423	850	0-2
	710	0-10
	600	0-40
	355	50-90
	212	80-100
	125	95-100

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